<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style type="text/css">
    	*{
    	    margin: 0;
    	    padding: 0;
    	}
    	.header{
    	    width: 100px;
    	    height: 300px;
    	    background-color: thistle;
    	    text-align: center;
    	}
    	li{
    	    line-height: 50px;
    	    list-style: none;
    	}
    	li:hover{
    	    background-color: yellow;
    	    font-size: 20px;
    	}
    </style>
</head>
<body>
    <div class="header">
        <nav>
            <ul>
                <li>数码世界</li>
                <li>家具家电</li>
                <li>办公用品</li>
                <li>服饰母婴</li>
                <li>运动文体</li>
                <li>礼品闲置</li>
            </ul>
        </nav>
    </div>
</body>
</html>